import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;

class MyThreadPoolExecutor{
    private List<Thread> threadList = new ArrayList<>();
    //用来保存任务的队列
    private BlockingQueue<Runnable> queue = new ArrayBlockingQueue<>(1000);
    //n来指定创建多少个线程
    public MyThreadPoolExecutor(int n){
        for (int i = 0; i < n; i++) {
            Thread t = new Thread(()->{
                //线程要做得事情就是把任务队列中的任务不停地取出来并且迅速执行
                while (true){
                    try {
                        //此处的take是带有阻塞功能的，如果队列为空，此处的take就会阻塞
                        Runnable runnable = queue.take();
                        //取出一个任务就执行一个任务执行即可
                        runnable.run();
                    } catch (InterruptedException e) {
                        throw new RuntimeException(e);
                    }
                }
            });
            t.start();
            threadList.add(t);
        }
    }
    public void Submit(Runnable runnable) throws InterruptedException {
        queue.put(runnable);
    }
}
public class demo {
    public static void main(String[] args) throws InterruptedException {
        MyThreadPoolExecutor executor = new MyThreadPoolExecutor(4);
        for (int i = 0; i < 1000; i++) {
            int n = i;
            executor.Submit(new Runnable() {
                @Override
                public void run() {
                    System.out.println("执行任务："+n+"当前线程为："+Thread.currentThread().getName());
                }
            });
        }
    }

}
